Radiation crosslinking of polyamide 610

Feng, Wen; Hu, Fang-Chi; Li, Yuan; Zhou, Yan

doi:10.1016/s0969-806x(01)00635-1

Cited by 14 publications

(6 citation statements)

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“…Based on our results and on other similar investigation (L ansk a et al, 2001;Feng et al, 2002;Cerrutti et al, 2003;Davis et al, 2003;Pramoda et al, 2003), a mechanism concerning the oxidation by thermal degradation of irradiated polyamides is presented in Fig. 4.…”

Section: Resultssupporting

confidence: 72%

“…They can be crosslinked (Lyons and Glover-jr, 1991;Feng et al, 2002;Dadbin et al, 2005) or they may be degraded (Buchalla et al, 2002;Sengupta et al, 2006a, b;Chytiri et al, 2008) as the consequence of their exposure to ionizing radiation. The easier decay of amide segments with increasing dose represents one manner of degradation that was mentioned earlier by Chapiro (1962).…”

Section: Introductionmentioning

confidence: 99%

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Post-irradiation thermal degradation of PA6 and PA6,6

Zaharescu¹,

Silva²,

Jipa

et al. 2010

Radiation Physics and Chemistry

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Section: Resultssupporting

confidence: 72%

Section: Introductionmentioning

confidence: 99%

Post-irradiation thermal degradation of PA6 and PA6,6

Zaharescu¹,

Silva²,

Jipa

et al. 2010

Radiation Physics and Chemistry

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“…Finally, several more studies focus on the influence of radiation cross-linking on polyamides (PA) [ 11 , 12 , 13 , 14 , 15 , 16 , 17 , 18 , 19 , 20 , 21 , 22 , 23 ], although they offer only low amounts of systematic and complex information on this topic. Hence, it is quite difficult to determine relevant correlations between ionized beta radiation and changes in the morphology with subsequent modifications to the mechanical properties’ profile required for the industrial applications of polyamides cross-linked by radiation.…”

Section: Introductionmentioning

confidence: 99%

Polyamide Surface Layer Nano-Indentation and Thermal Properties Modified by Irradiation

et al. 2020

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This study describes the effect of electron radiation on the nano-mechanical properties of surface layers of selected polyamide (PA) types. Electron radiation initiates the cross-linking of macromolecules in the polyamide structure, leading to the creation of a 3D network which fundamentally changes the properties of the tested polymers. Selected types of polyamide (PA 6, PA 66 and PA 9T) were exposed to various intensities of electron radiation (33 kGy, 66 kGy, 99 kGy, 132 kGy, 165 kGy and 198 kGy). The cross-linked polyamides’ surface properties were measured by means of the modern nano-indentation technique (Depth Sensing Indentation; DSI), which operates on the principle of the immediate detection of indenter penetration depth in dependence on the applied load. The evaluation was preformed using the Oliver–Pharr method. The effect of electron radiation on the tested polyamides manifested itself in the creation of a 3D network, which led to an increase of surface layer properties, such as indentation hardness, elastic modulus, creep and temperature resistance, by up to 93%. The increase of temperature and mechanical properties substantially broadens the field of application of these materials in technical practice, especially when higher temperature resistance is required. The positive changes to the nano-mechanical properties as well as mechanical and temperature capabilities instigated by the cross-linking process were confirmed by the gel volume test. These measurements lay the foundation for a detailed study of this topic, as well as for a more effective means of modifying chosen properties of technical polyamide products by radiation.

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“…Only few studies focus on polyamide degradations under irradiation, and comparisons between studies are difficult because of the wide variety of polyamide type materials and irradiation conditions. Moreover, behavior of linear polyamide under irradiation is most commonly studied to estimate radiolytic yields, gas production, radical species and degradation mechanisms instead of modification of separation properties for membrane processes [17][18][19][20].…”

Section: Introductionmentioning

confidence: 99%